shoo Share definition Flag Shoo means, "go away, I hate you, you don't belong here, why are you still here, you're not supposed to be here, go away!". so instead of saying all that, you just say shoo! SHOO! what? GO AWAY! oh shoo by j00l.i.e April 26, 2003 0 0 Get merch Get the shoo mug. Buy Now — $32.95 See more merch